The present study aims to uncover the neural pathways in the cerebral cortex that underlie sensory processing abnormalities in individuals with autism spectrum disorder (ASD). Dr. Kenet and colleagues will test the hypothesis that in ASD, the short-range connections between cortical neurons that are involved in sensory processing are functionally weaker, or are underconnected. They will focus on the activity of these connections during visual processing, as how these pathways function in normal individuals is relatively well understood. Neural activity in individuals with ASD will be observed and measured by magnetoencephalography (MEG) while the subjects are engaged in visual tasks. MEG is a noninvasive method of visualizing neural activity which allows researchers to examine the relative strength of the neuronal connections in a specific brain region.